Which ratio is NOT proportionate to 15/45?

3/9

3/15

1/3

30/90

Hey there, Lets solve this step by step.

Question = Which ratio is NOT proportionate to 15/45?

A proportion is an equation written in the form stating that two ratios are equivalent.

15/45 ⊄ 3/15

Cross multiply:

15 * 15 = 45 * 3

Simplifying

15 * 15 = 45 * 3

Multiply 15 * 15

225 = 45 * 3

Multiply 45 * 3

225 = 135

Solving 225 = 135

The left and right sides are not equal, therefore there is no solution.

15/45 simplify is 1/3.

3/9 _ is 1/3

3/15 _ is 1/5

1/3 is 1/3

30/60 is 1/2

So 3/15 and 30/60 are the correct answers